Chemical CalculationsD. Van Nostrand Company, 1923 - 276 páginas |
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Página 1
... contains some error , which is great or small according to the difficulty or delicacy of the operation by which it was determined ; hence there must be some figure in the result beyond which there is some uncertainty . In atomic weight ...
... contains some error , which is great or small according to the difficulty or delicacy of the operation by which it was determined ; hence there must be some figure in the result beyond which there is some uncertainty . In atomic weight ...
Página 5
... containing the decimal point placed after the units digit ( which will be called the unit factor ) , the other being the appropriate power of ten ( which may be called the ten - factor or the exponented factor ) . Now the ten or ...
... containing the decimal point placed after the units digit ( which will be called the unit factor ) , the other being the appropriate power of ten ( which may be called the ten - factor or the exponented factor ) . Now the ten or ...
Página 9
... contain the mantissae only , the characteristic being determined as given above . Chemists most commonly employ five place logarithms . Four place logarithms give four significant figures with a possible error of ± .5 in the last figure ...
... contain the mantissae only , the characteristic being determined as given above . Chemists most commonly employ five place logarithms . Four place logarithms give four significant figures with a possible error of ± .5 in the last figure ...
Página 10
... contains three signifi- cant figures by direct reading . To use such a table to find the loga- rithm of a number containing four significant figures will require interpolation . A five place logarithm table may be used to obtain four ...
... contains three signifi- cant figures by direct reading . To use such a table to find the loga- rithm of a number containing four significant figures will require interpolation . A five place logarithm table may be used to obtain four ...
Página 17
... contains 6.06 X 1023 molecules . Ans . 7.4.10-23 18. Calculate the average spacing of the molecules if 22.4 1. of a gas at standard contain 6.06 × 1023 molecules . Ans . 3.3 107 cm . 19. A cube one centimeter on an edge is divided ...
... contains 6.06 X 1023 molecules . Ans . 7.4.10-23 18. Calculate the average spacing of the molecules if 22.4 1. of a gas at standard contain 6.06 × 1023 molecules . Ans . 3.3 107 cm . 19. A cube one centimeter on an edge is divided ...
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Términos y frases comunes
AgCl ammonia amount analysis approximate aqueous vapor atomic weight barium sulphate barometer boiling point bromine CaCO3 calcium Calculate the percentage Calories carbon dioxide cent Chem chemical coefficient of expansion compound constant contains corresponding cubic centimeter degrees Baumé Density of water determined element equation equivalent factor flask formula freezing point gases given gram molecule H₂O HNO3 hydrochloric acid hydrogen iodine iron kilogram liquid liter logarithm mercuric oxide mercury methane method mixed acid mixture molecular weight NaCl NaOH nitric acid nitrogen normal solution obtained oleum oxygen percentage composition platinum potassium chloride potassium permanganate pounds pressure ratio reaction relative density salt sample saturated significant figures silver chloride sinker SiO2 sodium carbonate sodium chloride sodium hydroxide specific gravity specific heat standard conditions sulphuric acid Table taken temperature titrated unit volume vacuo valence vapor density water vapor
Pasajes populares
Página 95 - Avogadro's law states that equal volumes of all gases at the same temperature and pressure contain the same number of molecules...
Página 268 - Baume Hydrometers for use with this table must be graduated by the above formula, which formula should always be printed on the scale. Atomic weights from FW Clarke's table of 1901. О - 16. Allowance for Temperature At 10° -20° Be.— 1/30° Be.
Página 9 - The logarithm of the quotient of two positive numbers is found by subtracting the logarithm of the divisor from the logarithm of the dividend. (6) The logarithm of a power of a positive number is found by multiplying the logarithm of the number by the exponent of the power. For, N" = (oT)
Página 106 - (a) Units of Capacity. — The liter, defined as the volume occupied by a quantity of pure water at 4° C. having a mass of 1...
Página 269 - Soc., vol. 57, p. 363. AUTHORITIES — WC FERGUSON; HP TALBOT. This table has been approved and adopted as a standard by the Manufacturing Chemists' Association of the United States.
Página 88 - Marriott, so named after its discoverers, is that the volume of a gas varies inversely as the pressure to which it is subjected.
Página 140 - The atomic weight (also known as the combining weight) of an element is the ratio of the weight of an atom of that element to the weight of an atom of hydrogen. Hydrogen...
Página 58 - Thus, the reduction of the value of the modulus between the melting point of ice and the boiling point of water is...